Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description itself must carry behavioral disclosure. It does reveal meaningful traits: closing the attempt and publishing an 'immutable success or failure card' implies irreversibility and a permanent side effect. However, it does not mention permissions, reversibility of the close action, or behavior around export/next_candidate.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, front-loaded sentence with no filler. Every phrase contributes to the core purpose, and the key action 'Close the attempt' appears first.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a state-changing tool with three undocumented parameters and no output schema, this description is too thin. It explains the core action but omits parameter semantics, return behavior, and edge-case guidance, leaving significant gaps for an agent deciding whether and how to call it.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the description adds no meaning for any of the three parameters. 'challenge_handle' is required, and 'export' and 'next_candidate' are completely opaque, forcing an agent to guess their roles.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states a specific action ('Close') and a specific resource ('the attempt'), then defines the result: 'publish its immutable success or failure card.' This differentiates the tool from siblings like finish_challenge and verify_card by focusing on attempt-level sealing and card immutability.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description does not explain when to use seal_attempt versus alternatives such as finish_challenge or challenge_action. There are no stated conditions, prerequisites, or exclusions, so an agent only has an implied sense of purpose without guidance on choosing this tool.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.